xserver-multidpi/exa/exa_render.c
Eric Anholt dc0354104c Move EXA implementation up to the top level and remove its XFree86
dependencies. It was nearly abstract enough already to be used by
    multiple DDXes. This will be useful for EXA development through
    providing a fake acceleration implementation within Xephyr, so that
    testing can be done on new EXA code without worrying about buggy
    drivers.
2006-02-16 00:14:11 +00:00

797 lines
21 KiB
C

/*
* Copyright © 2001 Keith Packard
*
* Partly based on code that is Copyright © The XFree86 Project Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <stdlib.h>
#include "exa_priv.h"
#ifdef RENDER
#include "mipict.h"
#if DEBUG_TRACE_FALL
static void exaCompositeFallbackPictDesc(PicturePtr pict, char *string, int n)
{
char format[20];
char size[20];
char loc;
int temp;
if (!pict) {
snprintf(string, n, "None");
return;
}
switch (pict->format)
{
case PICT_a8r8g8b8:
snprintf(format, 20, "ARGB8888");
break;
case PICT_r5g6b5:
snprintf(format, 20, "RGB565 ");
break;
case PICT_x1r5g5b5:
snprintf(format, 20, "RGB555 ");
break;
case PICT_a8:
snprintf(format, 20, "A8 ");
break;
case PICT_a1:
snprintf(format, 20, "A1 ");
break;
default:
snprintf(format, 20, "0x%x", (int)pict->format);
break;
}
loc = exaGetOffscreenPixmap(pict->pDrawable, &temp, &temp) ? 's' : 'm';
snprintf(size, 20, "%dx%d%s", pict->pDrawable->width,
pict->pDrawable->height, pict->repeat ?
" R" : "");
snprintf(string, n, "0x%lx:%c fmt %s (%s)", (long)pict->pDrawable, loc, format, size);
}
static void
exaPrintCompositeFallback(CARD8 op,
PicturePtr pSrc,
PicturePtr pMask,
PicturePtr pDst)
{
char sop[20];
char srcdesc[40], maskdesc[40], dstdesc[40];
switch(op)
{
case PictOpSrc:
sprintf(sop, "Src");
break;
case PictOpOver:
sprintf(sop, "Over");
break;
default:
sprintf(sop, "0x%x", (int)op);
break;
}
exaCompositeFallbackPictDesc(pSrc, srcdesc, 40);
exaCompositeFallbackPictDesc(pMask, maskdesc, 40);
exaCompositeFallbackPictDesc(pDst, dstdesc, 40);
ErrorF("Composite fallback: op %s, \n"
" src %s, \n"
" mask %s, \n"
" dst %s, \n",
sop, srcdesc, maskdesc, dstdesc);
}
#endif
static Bool
exaGetPixelFromRGBA(CARD32 *pixel,
CARD16 red,
CARD16 green,
CARD16 blue,
CARD16 alpha,
CARD32 format)
{
int rbits, bbits, gbits, abits;
int rshift, bshift, gshift, ashift;
*pixel = 0;
if (!PICT_FORMAT_COLOR(format))
return FALSE;
rbits = PICT_FORMAT_R(format);
gbits = PICT_FORMAT_G(format);
bbits = PICT_FORMAT_B(format);
abits = PICT_FORMAT_A(format);
if (PICT_FORMAT_TYPE(format) == PICT_TYPE_ARGB) {
bshift = 0;
gshift = bbits;
rshift = gshift + gbits;
ashift = rshift + rbits;
} else { /* PICT_TYPE_ABGR */
rshift = 0;
gshift = rbits;
bshift = gshift + gbits;
ashift = bshift + bbits;
}
*pixel |= ( blue >> (16 - bbits)) << bshift;
*pixel |= ( red >> (16 - rbits)) << rshift;
*pixel |= (green >> (16 - gbits)) << gshift;
*pixel |= (alpha >> (16 - abits)) << ashift;
return TRUE;
}
static Bool
exaGetRGBAFromPixel(CARD32 pixel,
CARD16 *red,
CARD16 *green,
CARD16 *blue,
CARD16 *alpha,
CARD32 format)
{
int rbits, bbits, gbits, abits;
int rshift, bshift, gshift, ashift;
if (!PICT_FORMAT_COLOR(format))
return FALSE;
rbits = PICT_FORMAT_R(format);
gbits = PICT_FORMAT_G(format);
bbits = PICT_FORMAT_B(format);
abits = PICT_FORMAT_A(format);
if (PICT_FORMAT_TYPE(format) == PICT_TYPE_ARGB) {
bshift = 0;
gshift = bbits;
rshift = gshift + gbits;
ashift = rshift + rbits;
} else { /* PICT_TYPE_ABGR */
rshift = 0;
gshift = rbits;
bshift = gshift + gbits;
ashift = bshift + bbits;
}
*red = ((pixel >> rshift ) & ((1 << rbits) - 1)) << (16 - rbits);
while (rbits < 16) {
*red |= *red >> rbits;
rbits <<= 1;
}
*green = ((pixel >> gshift ) & ((1 << gbits) - 1)) << (16 - gbits);
while (gbits < 16) {
*green |= *green >> gbits;
gbits <<= 1;
}
*blue = ((pixel >> bshift ) & ((1 << bbits) - 1)) << (16 - bbits);
while (bbits < 16) {
*blue |= *blue >> bbits;
bbits <<= 1;
}
if (abits) {
*alpha = ((pixel >> ashift ) & ((1 << abits) - 1)) << (16 - abits);
while (abits < 16) {
*alpha |= *alpha >> abits;
abits <<= 1;
}
} else
*alpha = 0xffff;
return TRUE;
}
static int
exaTryDriverSolidFill(PicturePtr pSrc,
PicturePtr pDst,
INT16 xSrc,
INT16 ySrc,
INT16 xDst,
INT16 yDst,
CARD16 width,
CARD16 height)
{
ExaScreenPriv (pDst->pDrawable->pScreen);
RegionRec region;
BoxPtr pbox;
int nbox;
int dst_off_x, dst_off_y;
PixmapPtr pSrcPix, pDstPix;
CARD32 pixel;
CARD16 red, green, blue, alpha;
xDst += pDst->pDrawable->x;
yDst += pDst->pDrawable->y;
xSrc += pSrc->pDrawable->x;
ySrc += pSrc->pDrawable->y;
if (!miComputeCompositeRegion (&region, pSrc, NULL, pDst,
xSrc, ySrc, 0, 0, xDst, yDst,
width, height))
return 1;
exaDrawableUseMemory(pSrc->pDrawable);
exaDrawableUseScreen(pDst->pDrawable);
pDstPix = exaGetOffscreenPixmap (pDst->pDrawable, &dst_off_x, &dst_off_y);
if (!pDstPix) {
REGION_UNINIT(pDst->pDrawable->pScreen, &region);
return 0;
}
pSrcPix = exaGetDrawablePixmap (pSrc->pDrawable);
exaPrepareAccess(&pSrcPix->drawable, EXA_PREPARE_SRC);
switch (pSrcPix->drawable.bitsPerPixel) {
case 32:
pixel = *(CARD32 *)(pSrcPix->devPrivate.ptr);
break;
case 16:
pixel = *(CARD16 *)(pSrcPix->devPrivate.ptr);
break;
default:
pixel = *(CARD8 *)(pSrcPix->devPrivate.ptr);
break;
}
if (!exaGetRGBAFromPixel(pixel, &red, &green, &blue, &alpha,
pSrc->format))
{
REGION_UNINIT(pDst->pDrawable->pScreen, &region);
return -1;
}
exaFinishAccess(&pSrcPix->drawable, EXA_PREPARE_SRC);
exaGetPixelFromRGBA(&pixel, red, green, blue, alpha,
pDst->format);
if (!(*pExaScr->info->accel.PrepareSolid) (pDstPix, GXcopy, 0xffffffff, pixel))
{
REGION_UNINIT(pDst->pDrawable->pScreen, &region);
return -1;
}
nbox = REGION_NUM_RECTS(&region);
pbox = REGION_RECTS(&region);
while (nbox--)
{
(*pExaScr->info->accel.Solid) (pDstPix,
pbox->x1 + dst_off_x,
pbox->y1 + dst_off_y,
pbox->x2 + dst_off_x,
pbox->y2 + dst_off_y);
pbox++;
}
(*pExaScr->info->accel.DoneSolid) (pDstPix);
exaMarkSync(pDst->pDrawable->pScreen);
exaDrawableDirty (pDst->pDrawable);
REGION_UNINIT(pDst->pDrawable->pScreen, &region);
return 1;
}
static int
exaTryDriverComposite(CARD8 op,
PicturePtr pSrc,
PicturePtr pMask,
PicturePtr pDst,
INT16 xSrc,
INT16 ySrc,
INT16 xMask,
INT16 yMask,
INT16 xDst,
INT16 yDst,
CARD16 width,
CARD16 height)
{
ExaScreenPriv (pDst->pDrawable->pScreen);
RegionRec region;
BoxPtr pbox;
int nbox;
int src_off_x, src_off_y, mask_off_x, mask_off_y, dst_off_x, dst_off_y;
PixmapPtr pSrcPix, pMaskPix = NULL, pDstPix;
struct _Pixmap scratch;
/* Bail if we might exceed coord limits by rendering from/to these. We
* should really be making some scratch pixmaps with offsets and coords
* adjusted to deal with this, but it hasn't been done yet.
*/
if (pSrc->pDrawable->width > pExaScr->info->card.maxX ||
pSrc->pDrawable->height > pExaScr->info->card.maxY ||
pDst->pDrawable->width > pExaScr->info->card.maxX ||
pDst->pDrawable->height > pExaScr->info->card.maxY ||
(pMask && (pMask->pDrawable->width > pExaScr->info->card.maxX ||
pMask->pDrawable->height > pExaScr->info->card.maxY)))
{
return -1;
}
xDst += pDst->pDrawable->x;
yDst += pDst->pDrawable->y;
if (pMask) {
xMask += pMask->pDrawable->x;
yMask += pMask->pDrawable->y;
}
xSrc += pSrc->pDrawable->x;
ySrc += pSrc->pDrawable->y;
if (!miComputeCompositeRegion (&region, pSrc, pMask, pDst,
xSrc, ySrc, xMask, yMask, xDst, yDst,
width, height))
return 1;
if (pExaScr->info->accel.CheckComposite &&
!(*pExaScr->info->accel.CheckComposite) (op, pSrc, pMask, pDst))
{
REGION_UNINIT(pDst->pDrawable->pScreen, &region);
return -1;
}
exaDrawableUseScreen(pSrc->pDrawable);
if (pMask != NULL)
exaDrawableUseScreen(pMask->pDrawable);
exaDrawableUseScreen(pDst->pDrawable);
pSrcPix = exaGetOffscreenPixmap (pSrc->pDrawable, &src_off_x, &src_off_y);
if (pMask)
pMaskPix = exaGetOffscreenPixmap (pMask->pDrawable, &mask_off_x,
&mask_off_y);
pDstPix = exaGetOffscreenPixmap (pDst->pDrawable, &dst_off_x, &dst_off_y);
if (!pDstPix) {
REGION_UNINIT(pDst->pDrawable->pScreen, &region);
return 0;
}
if (!pSrcPix && (!pMask || pMaskPix) && pExaScr->info->accel.UploadToScratch) {
pSrcPix = exaGetDrawablePixmap (pSrc->pDrawable);
if ((*pExaScr->info->accel.UploadToScratch) (pSrcPix, &scratch))
pSrcPix = &scratch;
} else if (pSrcPix && pMask && !pMaskPix && pExaScr->info->accel.UploadToScratch) {
pMaskPix = exaGetDrawablePixmap (pMask->pDrawable);
if ((*pExaScr->info->accel.UploadToScratch) (pMaskPix, &scratch))
pMaskPix = &scratch;
}
if (!pSrcPix || (pMask && !pMaskPix)) {
REGION_UNINIT(pDst->pDrawable->pScreen, &region);
return 0;
}
if (!(*pExaScr->info->accel.PrepareComposite) (op, pSrc, pMask, pDst, pSrcPix,
pMaskPix, pDstPix))
{
REGION_UNINIT(pDst->pDrawable->pScreen, &region);
return -1;
}
nbox = REGION_NUM_RECTS(&region);
pbox = REGION_RECTS(&region);
xMask -= xDst;
yMask -= yDst;
xSrc -= xDst;
ySrc -= yDst;
while (nbox--)
{
(*pExaScr->info->accel.Composite) (pDstPix,
pbox->x1 + xSrc + src_off_x,
pbox->y1 + ySrc + src_off_y,
pbox->x1 + xMask + mask_off_x,
pbox->y1 + yMask + mask_off_y,
pbox->x1 + dst_off_x,
pbox->y1 + dst_off_y,
pbox->x2 - pbox->x1,
pbox->y2 - pbox->y1);
pbox++;
}
(*pExaScr->info->accel.DoneComposite) (pDstPix);
exaMarkSync(pDst->pDrawable->pScreen);
exaDrawableDirty (pDst->pDrawable);
REGION_UNINIT(pDst->pDrawable->pScreen, &region);
return 1;
}
void
exaComposite(CARD8 op,
PicturePtr pSrc,
PicturePtr pMask,
PicturePtr pDst,
INT16 xSrc,
INT16 ySrc,
INT16 xMask,
INT16 yMask,
INT16 xDst,
INT16 yDst,
CARD16 width,
CARD16 height)
{
ExaScreenPriv (pDst->pDrawable->pScreen);
int ret = -1;
Bool saveSrcRepeat = pSrc->repeat;
Bool saveMaskRepeat = pMask ? pMask->repeat : 0;
if (pExaScr->swappedOut) {
exaDrawableDirty(pDst->pDrawable);
pExaScr->SavedComposite(op, pSrc, pMask, pDst, xSrc, ySrc,
xMask, yMask, xDst, yDst, width, height);
return;
}
/* simplify the drivers by reducing here */
switch (op) {
case PictOpDisjointClear:
case PictOpConjointClear:
op = PictOpClear;
break;
case PictOpDisjointSrc:
case PictOpConjointSrc:
op = PictOpSrc;
break;
case PictOpDisjointDst:
case PictOpConjointDst:
case PictOpDst:
return;
default:
break;
}
/* Remove repeat in source if useless */
if (pSrc->repeat && !pSrc->transform && xSrc >= 0 &&
(xSrc + width) <= pSrc->pDrawable->width && ySrc >= 0 &&
(ySrc + height) <= pSrc->pDrawable->height)
pSrc->repeat = 0;
if (!pMask && pSrc->pDrawable)
{
if (op == PictOpSrc)
{
if (pSrc->pDrawable->width == 1 &&
pSrc->pDrawable->height == 1 && pSrc->repeat)
{
ret = exaTryDriverSolidFill(pSrc, pDst, xSrc, ySrc, xDst, yDst,
width, height);
if (ret == 1)
goto bail;
}
else if (!pSrc->repeat && !pSrc->transform &&
pSrc->format == pDst->format)
{
RegionRec region;
xDst += pDst->pDrawable->x;
yDst += pDst->pDrawable->y;
xSrc += pSrc->pDrawable->x;
ySrc += pSrc->pDrawable->y;
if (!miComputeCompositeRegion (&region, pSrc, pMask, pDst,
xSrc, ySrc, xMask, yMask, xDst,
yDst, width, height))
goto bail;
exaCopyNtoN (pSrc->pDrawable, pDst->pDrawable, NULL,
REGION_RECTS(&region), REGION_NUM_RECTS(&region),
xSrc - xDst, ySrc - yDst,
FALSE, FALSE, 0, NULL);
REGION_UNINIT(pDst->pDrawable->pScreen, &region);
goto bail;
}
}
}
/* Remove repeat in mask if useless */
if (pMask && pMask->repeat && !pMask->transform && xMask >= 0 &&
(xMask + width) <= pMask->pDrawable->width && yMask >= 0 &&
(yMask + height) <= pMask->pDrawable->height)
pMask->repeat = 0;
if (pSrc->pDrawable && (!pMask || pMask->pDrawable) &&
pExaScr->info->accel.PrepareComposite &&
!pSrc->alphaMap && (!pMask || !pMask->alphaMap) && !pDst->alphaMap)
{
ret = exaTryDriverComposite(op, pSrc, pMask, pDst, xSrc, ySrc, xMask,
yMask, xDst, yDst, width, height);
if (ret == 1)
goto bail;
}
if (ret != 0) {
/* failure to accelerate was not due to pixmaps being in the wrong
* locations.
*/
exaDrawableUseMemory(pSrc->pDrawable);
if (pMask != NULL)
exaDrawableUseMemory(pMask->pDrawable);
exaDrawableUseMemory(pDst->pDrawable);
}
#if DEBUG_TRACE_FALL
exaPrintCompositeFallback (op, pSrc, pMask, pDst);
#endif
ExaCheckComposite (op, pSrc, pMask, pDst, xSrc, ySrc,
xMask, yMask, xDst, yDst, width, height);
bail:
pSrc->repeat = saveSrcRepeat;
if (pMask)
pMask->repeat = saveMaskRepeat;
}
#endif
#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
/* exaGlyphs is a slight variation on miGlyphs, to support acceleration. The
* issue is that miGlyphs' use of ModifyPixmapHeader makes it impossible to
* migrate these pixmaps. So, instead we create a pixmap at the beginning of
* the loop and upload each glyph into the pixmap before compositing.
*/
void
exaGlyphs (CARD8 op,
PicturePtr pSrc,
PicturePtr pDst,
PictFormatPtr maskFormat,
INT16 xSrc,
INT16 ySrc,
int nlist,
GlyphListPtr list,
GlyphPtr *glyphs)
{
ExaScreenPriv (pDst->pDrawable->pScreen);
PixmapPtr pPixmap = NULL, pScratchPixmap = NULL;
PicturePtr pPicture;
PixmapPtr pMaskPixmap = NULL;
PicturePtr pMask;
ScreenPtr pScreen = pDst->pDrawable->pScreen;
int width = 0, height = 0;
int x, y;
int xDst = list->xOff, yDst = list->yOff;
int n;
GlyphPtr glyph;
int error;
BoxRec extents;
CARD32 component_alpha;
/* If the driver doesn't support accelerated composite, there's no point in
* going to this extra work. Assume that no driver will be able to do
* component-alpha, which is likely accurate (at least until we make a CA
* helper).
*/
if (!pExaScr->info->accel.PrepareComposite ||
(maskFormat && NeedsComponent(maskFormat->format))) {
miGlyphs(op, pSrc, pDst, maskFormat, xSrc, ySrc, nlist, list, glyphs);
return;
}
if (maskFormat)
{
GCPtr pGC;
xRectangle rect;
miGlyphExtents (nlist, list, glyphs, &extents);
if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1)
return;
width = extents.x2 - extents.x1;
height = extents.y2 - extents.y1;
pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
maskFormat->depth);
if (!pMaskPixmap)
return;
component_alpha = NeedsComponent(maskFormat->format);
pMask = CreatePicture (0, &pMaskPixmap->drawable,
maskFormat, CPComponentAlpha, &component_alpha,
serverClient, &error);
if (!pMask)
{
(*pScreen->DestroyPixmap) (pMaskPixmap);
return;
}
pGC = GetScratchGC (pMaskPixmap->drawable.depth, pScreen);
ValidateGC (&pMaskPixmap->drawable, pGC);
rect.x = 0;
rect.y = 0;
rect.width = width;
rect.height = height;
(*pGC->ops->PolyFillRect) (&pMaskPixmap->drawable, pGC, 1, &rect);
FreeScratchGC (pGC);
x = -extents.x1;
y = -extents.y1;
}
else
{
pMask = pDst;
x = 0;
y = 0;
}
while (nlist--)
{
GCPtr pGC;
int maxwidth = 0, maxheight = 0, i;
x += list->xOff;
y += list->yOff;
n = list->len;
for (i = 0; i < n; i++) {
if (glyphs[i]->info.width > maxwidth)
maxwidth = glyphs[i]->info.width;
if (glyphs[i]->info.height > maxheight)
maxheight = glyphs[i]->info.height;
}
if (maxwidth == 0 || maxheight == 0) {
while (n--)
{
glyph = *glyphs++;
x += glyph->info.xOff;
y += glyph->info.yOff;
}
list++;
continue;
}
/* Get a scratch pixmap to wrap the original glyph data */
pScratchPixmap = GetScratchPixmapHeader (pScreen, glyphs[0]->info.width,
glyphs[0]->info.height,
list->format->depth,
list->format->depth,
0, (pointer) (glyphs[0] + 1));
if (!pScratchPixmap)
return;
/* Create the (real) temporary pixmap to store the current glyph in */
pPixmap = (*pScreen->CreatePixmap) (pScreen, maxwidth, maxheight,
list->format->depth);
if (!pPixmap) {
FreeScratchPixmapHeader (pScratchPixmap);
return;
}
/* Create a temporary picture to wrap the temporary pixmap, so it can be
* used as a source for Composite.
*/
component_alpha = NeedsComponent(list->format->format);
pPicture = CreatePicture (0, &pPixmap->drawable, list->format,
CPComponentAlpha, &component_alpha,
serverClient, &error);
if (!pPicture) {
(*pScreen->DestroyPixmap) (pPixmap);
FreeScratchPixmapHeader (pScratchPixmap);
return;
}
/* Get a scratch GC with which to copy the glyph data from scratch to
* temporary
*/
pGC = GetScratchGC (list->format->depth, pScreen);
ValidateGC (&pPixmap->drawable, pGC);
/* Give the temporary pixmap an initial kick towards the screen, so
* it'll stick there.
*/
exaPixmapUseScreen (pPixmap);
while (n--)
{
glyph = *glyphs++;
(*pScreen->ModifyPixmapHeader) (pScratchPixmap,
glyph->info.width,
glyph->info.height,
0, 0, -1, (pointer) (glyph + 1));
pScratchPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
/* Copy the glyph data into the proper pixmap instead of a fake.
* First we try to use UploadToScreen, if we can, then we fall back
* to a plain exaCopyArea in case of failure.
*/
if (!pExaScr->info->accel.UploadToScreen ||
!exaPixmapIsOffscreen(pPixmap) ||
!(*pExaScr->info->accel.UploadToScreen) (pPixmap, 0, 0,
glyph->info.width,
glyph->info.height,
pScratchPixmap->devPrivate.ptr,
pScratchPixmap->devKind))
{
exaCopyArea (&pScratchPixmap->drawable, &pPixmap->drawable, pGC,
0, 0, glyph->info.width, glyph->info.height, 0, 0);
} else {
exaDrawableDirty (&pPixmap->drawable);
}
if (maskFormat)
{
CompositePicture (PictOpAdd,
pPicture,
NULL,
pMask,
0, 0,
0, 0,
x - glyph->info.x,
y - glyph->info.y,
glyph->info.width,
glyph->info.height);
}
else
{
CompositePicture (op,
pSrc,
pPicture,
pDst,
xSrc + (x - glyph->info.x) - xDst,
ySrc + (y - glyph->info.y) - yDst,
0, 0,
x - glyph->info.x,
y - glyph->info.y,
glyph->info.width,
glyph->info.height);
}
x += glyph->info.xOff;
y += glyph->info.yOff;
}
list++;
FreeScratchGC (pGC);
FreePicture ((pointer) pPicture, 0);
(*pScreen->DestroyPixmap) (pPixmap);
FreeScratchPixmapHeader (pScratchPixmap);
}
if (maskFormat)
{
x = extents.x1;
y = extents.y1;
CompositePicture (op,
pSrc,
pMask,
pDst,
xSrc + x - xDst,
ySrc + y - yDst,
0, 0,
x, y,
width, height);
FreePicture ((pointer) pMask, (XID) 0);
(*pScreen->DestroyPixmap) (pMaskPixmap);
}
}